I got the paperback of this back in august at a used bookstore in Peterborough, same chain as the one in Whitby mall. Haven't had a chance to read it yet but will soon. Always liked the original.

Heres a bit of trivia for fans of Firefox: you'll remember the fictitious jet in the book was dubbed MIG-31. There is a MIG-31 developed since then but as you can guess its nothing like whats described in the novel. It is in fact an improved MIG-25 with improved avionics (mostly fire control/targeting). Probably a few other improvements that are less widely known.